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detecting-arp-poisoning-in-network-traffic - Detect ARP Poisoning in Network Traffic

Detect and prevent ARP spoofing through ARPWatch, Dynamic ARP Inspection, Wireshark analysis, and custom monitoring scripts.

Tags

Updated: 2026-09-29
ARP poisoningARP spoofingnetwork securityman-in-the-middleDynamic ARP InspectionARPWatchWiresharkLayer 2 security

Capabilities

Monitor ARP trafficDetect MAC address changesDetect gateway spoofingDetect ARP floods

Typical Inputs

Target network segmentNetwork interfaceGateway IP address

Typical Outputs

ARP monitoring alertsARP mapping changesARP flood alerts

What this skill does

  • Monitor ARP traffic
  • Detect MAC address changes
  • Detect gateway spoofing
  • Detect ARP floods
  • Detect duplicate IP claims
  • Configure Dynamic ARP Inspection
  • Analyze packets with Wireshark
  • Generate anomaly alerts

Inputs

  • Target network segment
  • Network interface
  • Gateway IP address
  • Gateway MAC address
  • ARP packet captures
  • Static IP-to-MAC mappings
  • Switch configuration

Outputs

  • ARP monitoring alerts
  • ARP mapping changes
  • ARP flood alerts
  • Gateway spoofing alerts
  • Dynamic ARP Inspection configuration
  • Packet analysis findings
  • Monitoring log entries

Requirements

  • Access to the target broadcast domain
  • Linux host
  • Managed switch with Dynamic ARP Inspection support
  • Wireshark or tcpdump
  • Configured DHCP snooping
  • Network monitoring infrastructure

Source

  • Spec: SKILL.md

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